The portable fish finder has an updated 2.4-inch TFT color LCD screen (clear display), which can detect and display the underwater profile, water depth, water temperature, fish size (large/medium/small) and fish depth. It has two user modes: sensor/analog. Try everything in simulation mode and fish sensor mode. This portable device gives you a corded operating range of 26 feet and a depth detection of 328 feet. Fish finder Hasa 45 beam angle, detection frequency is 200Khz. Includes USB cable for charging. The fish depth gauge can work continuously for about 5 hours after being fully charged. Display brightness can be adjusted. Easily read data at night or in sunlight. Multiple function settings: Lucky portable fish finder has updated underwater profile display (3 displays). optional, cleaner and more professional).